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Old 02-24-11, 07:59 AM   #1
jalyst
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Default HDMI device that can capture (unencrypted) "HD" audio sources?

Not sure if this forum is well geared for this sort of discussion.
This is the only sub-forum I found that comes "close" to the subject matter.
But there's been some very friendly/informative users in the past.
So I figured I'd throw this one out there....

I want one for legitimate reasons, not for some organisation's definition of pirating...
I'm interested for the purpose of capturing HD audio (normally found in BD's & PS3 Games, rarely XB360) via HDMI,
running it through a HRTF filter (for 2ch simulated surround), & then out through my modded Essence ST.

I realise with BD movies I can already do this in windows without the need for a capture card, so long as I have a PAP compliant card, BD reader, & softplayer that can do DH or similar.
And it's irrelevant whether my card is PAP compliant in Linux, so once the BD is ripped I should also be able to do this.

But as my Essence ST is not PAP compliant, it's not possible to handle the HD audio stream via the PAP process in Windows.
Capturing BD output from my PS3 via HDMI (once HDCP is stripped) should remove the PAP burden, then hopefully I can pass the signal to a HRTF filter, and then onto my Essence ST.

Another reason for HDMI capture is HD audio from console games...

Again I want my Essence ST to be the final DAC in the chain, not an AVR.
The only concern I have is desync, but if audio & video are passed to the capture device & video "passed-through", then clocking should remain "fairly" in-sync.
Of course because of the post-processing assoc/w running through a filter and then on to the ST, tweaking of timings may be necessary.

Sorry if this doesn't clearly convey what I'm wanting, write-up is quite rushed, strapped for time right now.
Thank-you for your time/thoughts/advice! All the best.

Last edited by jalyst; 04-12-11 at 02:25 AM.
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Old 02-24-11, 09:22 AM   #2
ViN86
 
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Default Re: HDMI capture device that can capture HDCP encrypted sources?

Why HDMI? Why not use the optical out? BD players, the PS3, and the 360 all support it.

Use an optical in on your PC. This card has one.

http://www.newegg.com/Product/Produc...abs-_-29102023
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Old 02-24-11, 09:27 AM   #3
jalyst
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Default Re: HDMI capture device that can capture HDCP encrypted sources?

Because s/pdif is limited to dd/dts 5.1...
There does appears to be a few "work-arounds" with some hdmi capture cards, so that hdcp sources can be captured.

Just not seen any of these "work arounds" result in 8-ch LPCM (DD & DTS had audio formats) being brought across with the HD video. So far it seems limited to 2-ch LPCM...
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Old 02-24-11, 09:57 AM   #4
jalyst
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Default Re: HDMI capture device that can capture HDCP encrypted sources?

some fairly interesting insights have already started to pop up in these 2 threads
http://forum.doom9.org/showthread.ph...98#post1479998
http://forum.videohelp.com/threads/3...63#post2059163
I've just realised the heading i used for them both is somewhat ambiguous

One potential direction will to be head back down the "analogue hole" route...
And be limited to s/pdif capture using a device like the colossus, hd-pvr, or just a sound-card.
But I want to be certain 1st that the former direction isn't feasible, it's not conclusive yet.
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Old 02-25-11, 02:10 AM   #5
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Default Re: HDMI capture device that can capture HDCP encrypted sources?

ViN86/anyone? Thank-you.
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Old 02-25-11, 06:16 AM   #6
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Default Re: HDMI capture device that can capture HDCP encrypted sources?

*bump* sorry, just in a massive rush
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Old 02-26-11, 12:33 AM   #7
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Default Re: HDMI capture device that can capture HDCP encrypted sources?

Wait is somebody on there hinting that you can get around HDCP by hacking an avermedia card? If so what card is this and where do you get the hack?

I want to watch digital cable on my PC over HDMI (not interested in recording it, already have a tivo for that) and would like to know if this is possible as all digital content is HDCP protected.
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Old 02-26-11, 12:51 AM   #8
jalyst
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Default Re: HDMI capture device that can capture HDCP encrypted sources?

Yeah, have a close look at this thread I linked to...
http://forum.videohelp.com/threads/3...63#post2059163
Don't know if it'll work with all cable boxes, but it works with at least once HDCP source (PS3), so it should in theory work for others.
Audio is limited to 2ch PCM though, for some bizarre reason that's about the best most HDMI capture cards can do
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Old 02-26-11, 12:51 AM   #9
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Default Re: HDMI capture device that can capture HDCP encrypted sources?

can you add any advice to this thread? thanks.
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Old 02-27-11, 07:49 AM   #10
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Default Re: HDMI capture device that can capture HDCP encrypted sources?

...

Last edited by jalyst; 04-11-11 at 09:23 AM.
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Old 04-11-11, 09:22 AM   #11
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Default Re: HDMI capture device that can capture HDCP encrypted sources?

....
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Old 04-11-11, 12:41 PM   #12
jalyst
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Default Re: HDMI capture device that can capture HDCP encrypted sources?

Quote:
Originally Posted by jalyst
Oh I'm not arguing it'll be legal, at least according to the the US's DMCA...
But I don't want to circumvent HDCP for illegitimate purposes e.g. copying copyright content.

Here's one example of a card that can capture hdcp sources
http://forum.doom9.org/showthread.ph...32#post1457132
There's one or two other examples if i recall correctly...
And of course one doesn't need to limit themselves to cards w/a software flaw that allows one to circumvent HDCP.
There are strippers aplenty around now, including ones that supposedly pass "HD" audio via HDMI.
One small problem though, there still isn't bloody anything that can capture that passed "HD" audio!

The only thing I've found so far that comes close is this.
But it's not clear whether it's "HD"* DD/DTS, or just regular 5.1.
I suspect it'll only be 2-ch PCM & hence just regular DD/DTS?
I'm emailing them for more detail....

Also the colossus will supposedly have DTS 5.1 support soon, along with DD 5.1 via HDMI.
It's only 2-ch PCM & of course can't support the "HD" formats I was hoping for, but it's likely to be better supported than the above option.

The only other devices that come kinda close, but I doubt will be usable unless anyone can verify/debunk are:
http://www.grassvalley.com/products/pegasus
Available via USB or PCIe
http://www.blackmagic-design.com/products/intensity/
No PCI/e card option...
http://www.matrox.com/video/en/products/pc/mxo2_family/
Still not listed on OEM's site, I've emailed to find out when they'll release, & for more detail
http://forum.doom9.org/showthread.ph...17#post1491617

Not every BD utilises HD audio & it's not for capturing HD audio from BD's anyway, as that can be done "on PC".
It's for capturing HD audio that's sometimes used in PS3 games, and on the rare occasion, Xbox games.
Although for the latter I won't be able to grab HD audio, because Xbox's can only pass DD/DTS 5.1 2ch LPCM externally.

But it's looking increasingly unlikely that a HDMI device that can capture HD audio exists.
So I may have to settle for one of the aforementioned, or one of the soundcards that does the same.

OR...

A multi-ch analogue capture card, but that just gets too complicated don't you reckon?!?
http://www.m-audio.com/products/en_us/Delta44.html
http://www.m-audio.com/products/en_us/Delta66.html
http://www.m-audio.com/products/en_us/Delta1010LT.html

If I go for digital capture....
I'm leaning more towards the colossus, as it can also capture/transcode analogue, which may be handy if DVB-C tuning's unreliable!

*"HD" = DTS-MA & TrueHD 7.1 (& more) HD surround formats
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